Many times the "high temperature list" in the country, why is the county more hot?

Chuanguan News reporter Yuan Chenglin

At 10 o'clock on August 17, Dazhou Qu County ranked second in the national temperature ranking at 39.0 ° C, second only to 39.2 ° C in Chongqing Tongnan.

It is not the first time to show his face on the "High temperature list" across the country. At 14:00 on August 15, Qu County reached the top of 43.1 ° C at 2418 national meteorological observation stations. On the same day, the highest temperature in Qu County reached 43.5 ° C, setting a high temperature in the province this year.

Let's look at it again. At 11:00 on July 15th, Qu County ranked first in the country with 39.0 ° C.

Why is Qixian more hot?

At 14:00 on August 15th, Qu County rushed to the country's "High temperature list" first

Many times the "high temperature list" in the country, hot "out of the circle"

On the morning of August 17, the Qixian Meteorological Observatory confirmed the 9th time to the high -temperature red warning signal released on August 8th. The maximum temperature of 36 towns and towns in the county except Township Town will rise to above 40 ° C.

Back to August, the daily temperature interval of Qu County has been stabilized at 29 ° C to 42 ° C for a long time, with a maximum of 43 ° C in some periods.

"From August 1st to 14th, the average temperature in the county was 33.3 ° C, which was 4.9 ° C higher than the same period." Wu Haizhou, director of the Qixian Meteorological Bureau, introduced.

Highly more than August. In the last round of continuous sunny, hot, hot, high temperature and low temperature, the maximum temperature of Qu County for 10 consecutive days (July 6th to 15th) exceeded 38 ° C, of ​​which the highest temperature on the 14th was 41.9 ° C and the highest temperature of the 15th day was 42.3 ° C. For two consecutive days, for two consecutive days Breaking the highest temperature in Dazhou in July since the meteorological record. The original record is also owned by Qu County, 40.8 ° C, July 28, 2017.

The temperature of Qu County is high, not just this year.

A "Climate Overview" form posted in the conference room on the 6th floor of Dazhou Meteorological Observatory showed that as of 2021, among the average temperatures of counties and cities in Dazhou, Qu County ranked first in the city at 17.7 ° C; It is still the highest in the city; the extreme highest temperature is 42.7 ° C, which was created on August 15, 2006 in Qu County.

In Dazhou City, "drawing the head" and looking at the province and the whole country, the county also "ranked".

In addition to refreshing the highest temperature in the province this year on August 15th, at 10 o'clock on August 9, Qu County topped the national "High temperature list" on 37.1 ° C; at 11:00 on July 14, it reached the top of 39.1 ° C and 11:00 on 15th at 11:00 on 15th. 39.0 ° C to the top.

The Central Meteorological Observatory Weibo teased "Sichuan Qu County, an old acquaintance"

Why is it hotter? Factors such as latitude, altitude, terrain are superimposed

The reasons for the more heat in Qu County, the reporter interviewed Dazhou Meteorological Observatory and Qu County Meteorological Bureau.

Xiao Peng, the director of Dazhou Meteorological Observatory and the senior engineer, and Wu Haizhou, director of the Qixian Meteorological Bureau, analyzed that there were at least three reasons for the heat.

From the perspective of latitude, Qu County is located in the southern part of Dazhou, with higher latitude temperatures higher.

From the perspective of altitude, the county town area is located on the side of the Qujiang River, located in the Pingba area, and the altitude is low. Among them, the National Meteorological Observation Station of Qu County is located at the middle of Ba Meng Mountain in the outskirts of the city, with an altitude of 305.7 meters. "Usually the temperature of 100 meters above sea level decreases by 0.6 ° C, so even if the altitude difference between 50 meters, it may bring a temperature gap of 0.3 ° C and the possibility of impacting the high temperature list."

From the perspective of the terrain, Qu County is located in the transitional area of ​​Parallel Mountain Valley and the Hills in the middle of Sichuan. "The wind speed in the county is generally low, and the average wind speed for many years is only 1.4m/s." Wu Haizhou introduced. In comparison, the same place in the south of Dazhou and the mountains separated from the mountains of Qu County, the three mountains of Huayu Mountain, Causeway Mountain, and Mingyue Mountain are lying north and south. The temperature is lower than that of Qu County.

Qu County Geographical Location Map

It has been able to reach the national temperature rankings many times, set a high temperature in the province this year, and other factors to help. "Factors such as solar radiation, sky cloud, rainfall, etc. will affect the ground temperature." Xiao Peng said.

Wu Haizhou introduced that due to the high pressure of the subtropical, the weather continued to be high in high temperatures in the county. On the 15th, Qu County's sky was in good condition, cloudless, and sunlight directly illuminated the ground, which helped the temperature of Qu County higher than that of the sky; if there was cloud, it would form a certain degree of cover for the sun. 15th high. "

However, the impact of the cloud on the temperature is not static. Wu Haizhou explained that when there was no sunlight at night, the ground emitted heat. If there was a cloud in the sky, it would "reflect" the heat emitted to the air, which was equivalent to the role of insulation.

In addition, due to the long time of high temperature, hot and hot rain, the weather continues for a long time, and the calories will not be emitted in time, and more and more calories accumulate on the ground. "Depending on the heat dissipation of the night, the basic temperature will be fluctuating every day, resulting in a fluctuation, resulting in the highest day temperature may continue to rise." Wu Haizhou said.

The factors that affect the ground temperature are diverse and complicated. Xiao Peng added that the climate rules have shown that the temperature of the county over the years shows higher temperatures, "but not absolute. Occasionally, the highest temperature in the main urban area of ​​Dazhou exceeds the county ","

National temperature live map at 14:00 on August 17th

How long does it take to get hot? Can it be artificially raining?

On the morning of the 17th, the Central Meteorological Observatory posted news. According to the recent monitoring and evaluation of the National Climate Center, the average intensity, impact scope and duration of the high temperature heat wave event were comprehensively considered. It has reached the strongest meteorological observation record in 1961. "Sichuan -Chongqing high temperature leads the whole country." The daily weather reminder issued by the Central Meteorological Observatory mentioned on the morning of the morning that today, the highest temperature in parts of eastern Sichuan, central and western Chongqing, central and northern Hubei, central Jiangxi, and western Zhejiang can reach the highest temperature. Above 40 ° C. At 14:00 on the 17th, the national temperature reality shows that the top 10 are cities in Sichuan and Chongqing, of which Qu County is ranked fourth with 42.6 ° C.

How long will the high -temperature weather last?

On the morning of the 17th of the Sichuan Meteorological Observatory, the weather reminder: In the next three days, the high temperature weather in the basin will continue, the highest temperature is 35 ~ 38 ° C in the west, and most of the remaining places can reach 39 ~ 42 ° C or above; There are more dispersion or thunderstorms along the mountains in the west, and there are strong convective weather such as short -term heavy precipitation and thunderstorms.

Dazhou Meteorological Observatory released 72 -hour weather forecast on the afternoon of the 17th: 18th, sunny, temperature of 28-42 ° C; on the 19th, cloudy is cloudy, temperature is 28-42 ° C; on the 20th, the temperature is 27-43 ° C.

Earlier, Dazhou Meteorological Observatory upgraded the drought (high temperature drought) yellow warning to yellow on August 15th. It is expected that by the late August, the city will still maintain a large range of high -strength high temperature and rainy weather. Above ° C or above, the low altitude area will exceed 42 ° C.

On the morning of the 17th, Dazhou Meteorological Observatory released the first drought monitoring report: Based on the current city's weather, agriculture, and hydrological drought, Wanyuan and Xuanhan are heavy droughts, Dachuan, Tongchuan, and Kaijiang are medium droughts, Qu County and Dazhu, and Dazhu. For light drought.

Can drought be solved by manually increase rainfall?

Xiao Peng said that it will always be carried out in a timely manner. Artificial rainfall needs to have rain clouds and reach a certain thickness to form rainfall. It is expected that in the next 8 to 10 days, the city of Dazhou will still be controlled by the subtropical high -voltage. It is mainly based on sunny and hot clouds. The rain clouds are not sufficient and there is no conditions for artificial rainfall operations.

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